import 'whatwg-fetch';
import { IChartData, WidgetTemplate, DataSourceInfo } from "../interfaces";
import { IDataProvider } from "./IDataProvider";
export declare class DataProvider implements IDataProvider {
    private readonly apiUrl;
    private cache;
    private get gqlLink();
    private get templatesLink();
    private get authHeaders();
    constructor(apiUrl: string);
    getTemplate(templateId: string): Promise<WidgetTemplate>;
    parseTemplate(template: WidgetTemplate, hasEntity?: boolean): Promise<IChartData | null>;
    /**
     * Возвращает список запросов для graphQL по каждому dataSet
     * Также используется для экспорта данных
     */
    templateToRequests(template: WidgetTemplate, hasEntity?: boolean): Promise<{
        request: string;
        resultProp: string;
    }[]>;
    getDataSourceInfo(dataSourceName: string): Promise<DataSourceInfo>;
    getDataSources(): Promise<DataSourceInfo[]>;
    private handleError;
    /**
     * @return null - если не распознан тип dataSource или name === ''
     */
    private serializeDataSource;
    private serializeDynamicGQL;
    private serializeTableGQL;
    private serializeReportGQL;
    private serializeStaticGQL;
    private serializeProfileGQL;
    private serializeDistributionGQL;
    private getPeriod;
    private makeGqlRequest;
}